| Title | District 18, Oregon Watermaster Districts |
| Subject 1 (Primary) | Watermaster Districts |
| Subject 2 | |
| Geographic Extent Name 1 (Admin Basin) | Willamette |
| Geographic Extent Name 2 | District 18 |
| Basin | 2 - Willamette |
| Map Date | 6/9/2003 |
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| Expiration Date | |
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| Map Author | |
| Agency | Oregon Water Resources Department |
| Map Description | |